The invention discloses an environment-friendly solid material crushing and incinerating mechanism. The environment-friendly solid material crushing and incinerating mechanism comprises a machine box,a feeding hole is formed in the upper end of the machine box, an extrusion channel is formed in the lower end of the machine box, a crushing tool is arranged on the surface of a rotary shaft, the twosides of a circulating cavity are correspondingly provided with one heat storage device, a purification device is arranged in a treatment box, a containing box is arranged at the lower end of an incineration chamber, a valve channel is arranged at the lower end of the containing box, and part of water can be extruded and dried through the arranged dehydrating and extruding machine room, the crushing and incinerating are facilitated, an upper extruding roller and a lower extruding roller are ground in a staggered mode, the second step of the crushing process is performed, the crushing strengthis enhanced, so that the solid waste can be fully ground and ground, the temperature sensor is used for detecting the incineration chamber, the combustion-supporting plate and incineration electric heater are arranged in a linkage fit mode, the burning rate is low, the volume of the ash subjected to waste incineration is reduced, the storage box is used for containing the heat generated by incineration, can be used for generating electricity and supplying heat, and is beneficial to saving and recycling.